^"l 



The Nautilus. 



Vol. v. SEPTEMBER, 1891, No. 



LIST OF SHELLS COLLECTED ON FAYAL ISLANDS, AZORES ; AND 

 ON MADEIRA ISLANDS; WITH PREFATORY NOTES. 



BY WILLIAM H. RUSH, M. D., U. S. NAVY. 



While serving as medical officer on board the Pennsylvania 

 Nautical School-Ship Saratoga during the practice cruises of the 

 year 1890 and the Spring of 1891, advantage was taken of the 

 opportunities thus presented to collect any molluskan forms of animal 

 life that by a little trouble and some searching could be found. No 

 special outfit was provided other than the usual collecting box, with, 

 its forceps and knife, and the rake. Surface towing nets, made of 

 the common bobinet, were used when sailing to collect the pelagic 

 forms. Two dredges were kindly loaned by the Smithsonian 

 Institution but no opportunity presented for their use. 



During the cruises of the Summer of 1890, -stops were made at 

 Horta, Fayal Is. Azores ; at Southampton, England, where no 

 attempt at collecting was made although a few H. ( Trichia) rufescens 

 Pennant were taken at Netley Castle ; and at Funchal, Madeira. 



During the stay at Horta two trips were made to the small fresh 

 water pond in the extinct crater in the mountains, for the purpose 

 of procuring a supply of Pisidmm Dabneyi De Guerne ; but not a 

 single specimen rewarded the visits. The journeys were made on 

 the back of a small donkey, which knowing animal, as soon as the 

 higher parts of the mountains were reached, selected the deep ruts 

 in which to walk, often leaving the rider, unless with special attention 

 upon his part, stranded ; and the pleasures of the journey were not 

 materially increased by the community of fleas inhabiting the hang- 



